TABLE 1

Number and distribution of EST loci among group 2 chromosomes in wheat

All ESTsESTs with all fragments mapped
ChromosomeChromosome
Item2A2B2DTotal2A2B2DTotal
Observed7699598722600302360324986
Expecteda915.5944.8739.72600347.2358.3280.5986
Deviation−146.5 14.2132.3 −45.2  1.7 43.5
χ2b 47.32*** 12.64**
Density ratioc 0.84  1.02  1.18 0.87  1.00  1.16
• a Based on the assumption of proportional distribution of ESTs among the group 2 chromosomes based on their physical length (Gill et al. 1991).

• b Probability of a departure from the expected number of loci.

• c Ratio of observed to expected number of loci.

• ** and ***, significant at 0.01 and 0.001 probability levels, respectively.